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Contractor:
Engineer:
Project Name:
Wiring Schematics cont.
Aurora Advanced with ECM and IntelliStart cont.
HP
P4
HP
P13
LP
LP
FP2
FP2
FP1
FP1
REV
REV
CC2
G
P5
LO
HI
CCG
CC
FG
F
R
JW2 - Alarm
F
CC
G
Y1
Field Connections
P2
The manufacturer works continually to improve its products. As a result, the design and specifi cations of each product at the time of order may be changed without notice. Purchaser's approval of this data set signifi es that the equipment is acceptable under the provisions
of the job specifi cation. Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties, but are merely the manufacturer's opinion or commendation of its products. York and Affi nity are registered
trademarks of Johnson Controls, Inc., and are used with permission.
SD2500AK6
06/21
P.O.:
Unit Tag:
Off
On
FP1 – 15
o
F/30
o
F
1
ECM PWM
R
FP2 – 15
o
F/30
o
F
3
RV – B/O
Fault
ACC – Dip 4
4
5
ACC – Dip 5
CC – Dual/Single
6
G
SW1 Test
L – Pulse/Continuous
Status
8
Reheat/Normal
SW2
RV – K1
AURORA BASE
CC – K2
CONTROL™
CC Hi – K3
Fan – K4
P11
Alarm – K5
Acc – K6
P9
Factory Fan Connection
Field Connections
P1
Legend
Factory Low voltage wiring
T
Factory Line voltage wiring
Field low voltage wiring
G
Field line voltage wiring
Optional block
DC Voltage PCB traces
Junction
Quick connect terminal
Wire nut
Field wire lug
L1
Ground
Relay Contacts-
2
3
1
N.O., N.C.
P
Fuse
Breaker
PB1, PB2 -
CC -
Compressor Contactor
CO -
Condensate overflow sensor
PS -
RV -
K5 -
DHW pump relay
Loop pump relay
SW1 -
K6 -
CR3 -
PSC Fan Speed Relay
SW1 -
PSC Fan Power Relay
SW2 -
CR4 -
CS -
Compressor Solenoid
TS -
F1 and F2 -
Fuses
HWL -
HE -
Heater element
SC -
HP -
High pressure switch
SR -
ER1 to ER4 -
Aux heat stage relays
WCL -
LP -
Low pressure switch
EH1
2
Y
Config
P3
EH2
C
EH1
C
CO
7
N/A
(+)
P6
(-)
R
C
P7
(+)
(-)
G
Com1
R
C
P8
Traditional Thermostat
G
Com2
Dual Fuel Wiring Diagram
Using Field Installed Relay
Fossil Fuel
Furnace
C
R
W
R
R
G
Thermistor
Light emitting diode - Green
Relay coil
Capacitor w/ bleed resistor
Switch - Condensate overflow
Switch - High pressure
Switch - Low pressure
Polarized connector
Current Transducer (CT)
Power blocks
Power strip
Reversing Valve coil
DIP package 5 position AXB
TEST MODE ABC Board
DIP package 8 position ABC Board
Thermal limit switch
Hot water limit sensor
Start Contactor
Start Relay
Water Coil Limit Sensor
1 - Switch blue and red wires for 208V operation.
2 - The blk/wh and gray/wh wires are removed when Aux Heat is installed
3 – When Auxiliary Heat is field installed the harness will then be connected to
the auxiliary heat unit. The auxiliary heat unit will then power the blower. Refer to
EAS/EAM/EAL Auxiliary Heat kit installation instructions.
4 – Low voltage wiring CLASS 2.
5 – Brown blower power wire routed through Current Transducer two times.
6 – Field Connected: Refer to Installation Manual and Auxiliary Heat Instructions for
Current Transducer installation.
7 – Variable speed pump low voltage harness provided with Variable Speed Flow Center.
8 – Variable speed pump power wires to connect the pump to L1 and L2 on the AXB board
are provided with Variable Speed Flow Center.
9 - Wires provided for Auxiliary Heat low voltage control. Wires are secured at blower.
53
Affinity & Affinity Advanced Series
MODULATING VALVE
AXB BOARD
GND
1
24 VAC
2
0-10DC
3
Communicating Thermostat
To Fossil Fuel
Furnace W input
Dual Fuel Wiring Diagram
Using Field Installed Relay
Note 11: Field installed SPST dual fuel relay
(Required for dual fuel installation)
EH1
ABC
24VDC
Board
C
Thermostat
Y1
1st Stage Compressor
Y2
2nd Stage Compressor
O
Reversing Valve
L
Fault Signal
C
Common
Common
R
24 VAC
24 VAC
Auxiliary Heat Relay
G
Fan
Auxiliary
Heat Relay
W
Auxiliary Heat Relay
Note 11: Field installed SPST dual fuel relay
(Required for dual fuel installation)
Connects to L2
Figure 1:
K6 Relay
and NO on
Optional Internal
AXB Board
Hot Water
Generation Pump
COM
NO
Wiring Schematic
L2
Blue
DHW
Cabinet
Pump
HW
Switch
Blue
3
2
1
Notes
1 - 6 Tons 60Hz
1
2
C
R
ABC BOARD
R from Fossil
Fuel Furnace
ABC Board
Y1
Y2
O
P1
LO
C
R
P2
ES
= chassis
Purple
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